Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/11/2024, 02:03
General
- Target Client-built2.exe
- Size 3.1MB
- Sample241107-cg4htatbrp
- SHA256 757424386cb9f3c986cca5b9fe3ccc296443f8edb6cbdf5caedc82b13f5e9b2d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
10.0.0.97:4782
-
925f6110-6db0-4053-8833-f663c97c5e70
-
encryption_key
A9E8D8AB807B81C2D0B67F9752CFAF0AA688C5D0
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Client.exe
memory/3324-0-0x00007FFD651D3000-0x00007FFD651D5000-memory.dmp
memory/3324-1-0x0000000000180000-0x00000000004A4000-memory.dmp
memory/3324-2-0x00007FFD651D0000-0x00007FFD65C91000-memory.dmp
memory/3324-9-0x00007FFD651D0000-0x00007FFD65C91000-memory.dmp
memory/3472-8-0x00007FFD651D0000-0x00007FFD65C91000-memory.dmp
memory/3472-10-0x00007FFD651D0000-0x00007FFD65C91000-memory.dmp
memory/3472-11-0x000000001C9A0000-0x000000001C9F0000-memory.dmp
memory/3472-12-0x000000001CAB0000-0x000000001CB62000-memory.dmp
memory/3472-13-0x00007FFD651D0000-0x00007FFD65C91000-memory.dmp